Legendary journalist Mike Wallace died at the age of 93. In a candid and touching interview, his "60 Minutes" colleague Lesley Stahl shares personal memories with Anderson Cooper.

She recalls his competitive drive and tells the story of losing an interview with Barbara Streisand to Wallace. "I loved him. I totally loved him. I laughed. I laughed after about two weeks," she said.

On the internal arguments between "60 Minutes" creator Don Hewitt and Wallace, Stahl said, "Mostly they were just yelling over the content of the piece, and they cared. It really was a measure of the commitment they both had to getting it right."

Both Cooper and Stahl talked about Wallace's courage to publicly discuss his depression during a time when the illness carried a negative stigma, and few of his stature were open to admitting their struggles. Stahl remarked, "It was part of the man's fearlessness...that was huge in how many people he helped by going public."